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[Sync Iteration] go/diamond/1 #107

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[Sync Iteration] go/diamond/1 #107

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34 changes: 34 additions & 0 deletions solutions/go/diamond/1/diamond.go
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Original file line number Diff line number Diff line change
@@ -0,0 +1,34 @@
package diamond

import "strings"

func Gen(char byte) (string, error) {
if char == 'A' {
return "A", nil
}

spaces := int(char - 'A')
lines := make([]string, spaces)
for i := 0; i <= spaces; i++ {
var line strings.Builder
line.WriteString(strings.Repeat(string(char), spaces-i))
line.WriteByte(char)

if i > 0 {
line.WriteString(strings.Repeat(" ", (spaces*2+2)-((spaces-i)*2+2)))
line.WriteByte(char)
}

line.WriteString(strings.Repeat(string(char), spaces-i))
lines = append(lines, line.String())
}

var result strings.Builder
for _, i := range lines {
result.WriteString(i)
}
for i := spaces - 1; i >= 0; spaces-- {
result.WriteString(lines[i])
}
return result.String(), nil
}